*{
    margin: 0;
    padding: 0;
}
table{
    width: 700px;
    margin: 50px;
    border: 1px solid #000;
    border-collapse: collapse;
    text-align: center;
}
td{
    border: 1px solid #000;
    padding: 10px 0;
}
th{
    background-color: aqua;
    font-size: 25px;
    font-weight: normal;
    font-family: '宋体','小四';
}